CN105621280A - Device and method for mounting and dismounting crane boom - Google Patents

Device and method for mounting and dismounting crane boom Download PDF

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Publication number
CN105621280A
CN105621280A CN201610181167.1A CN201610181167A CN105621280A CN 105621280 A CN105621280 A CN 105621280A CN 201610181167 A CN201610181167 A CN 201610181167A CN 105621280 A CN105621280 A CN 105621280A
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girder steel
pulley
pole
gin
fixed
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CN105621280B (en
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庄爱军
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/82Luffing gear

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)

Abstract

本发明公开了一种安装和拆卸起重臂的装置和方法,包括主铉杆、横向钢梁、纵向钢梁、变幅小车、扒杆吊、动滑轮组、变幅钢丝绳和起升钢丝绳,扒杆吊固定在扒杆吊底座上,横向钢梁、纵向钢梁和主铉杆下端共同围合成一个半封闭矩形区域,变幅小车夹持在该半封闭矩形区域内,变幅钢丝绳与手拉葫芦连接,且一端固定在扒杆吊上,另一端固定在主铉杆上,起升钢丝绳一端固定在主铉杆上,另一端穿过动滑轮组后固定在扒杆吊上。本发明利用变幅小车搭配扒杆吊以及动滑轮组,对起重臂进行安装和拆卸,充分利用了自身的空间和优势,能够一次性将起重臂吊离塔机连接,安装和拆卸结构简单,易于操作,可行性强。

The invention discloses a device and method for installing and dismounting a lifting arm, which comprises a main pole, a transverse steel beam, a longitudinal steel beam, a luffing trolley, a pole crane, a moving pulley block, an luffing steel wire rope and a lifting steel wire rope. The pole crane is fixed on the base of the pole crane. The horizontal steel beam, the longitudinal steel beam and the lower end of the main pole together form a semi-closed rectangular area. The luffing trolley is clamped in the semi-closed rectangular area. The gourd is connected, and one end is fixed on the pole crane, the other end is fixed on the main pole, one end of the lifting wire rope is fixed on the main pole, and the other end is fixed on the pole crane after passing through the movable pulley block. The present invention uses the luffing trolley to match the pole crane and the movable pulley block to install and disassemble the boom, fully utilizes its own space and advantages, can hoist the boom away from the tower crane at one time, and has a simple structure for installation and disassembly , easy to operate and highly feasible.

Description

安装和拆卸起重臂的装置和方法Apparatus and method for mounting and dismounting a jib

技术领域technical field

本发明涉及起重机械施工技术领域,尤其涉及一种利用变幅小车安装和拆卸起重臂的装置和方法。The invention relates to the technical field of hoisting machinery construction, in particular to a device and method for installing and dismounting a jib by using a luffing trolley.

背景技术Background technique

随着社会主义建设步伐加快,高层、超高层建筑使用塔吊和在塔吊基础定位时出现错误以及建筑物悬挑原因越来越多的塔式起重机无法正常拆卸,且绝大数需空中解体的塔吊起重臂伸出建筑物边缘几十米,一般辅助拆卸设备无法一次性将起重臂吊离塔机连接成功放置屋面层,这样操作效率低,人力成本大。With the acceleration of socialist construction, more and more tower cranes cannot be disassembled normally due to the use of tower cranes in high-rise and super high-rise buildings, errors in the positioning of tower crane foundations, and building overhangs, and the vast majority of tower cranes that need to be dismantled in the air The jib extends tens of meters from the edge of the building, and general auxiliary dismantling equipment cannot hoist the jib away from the tower crane at one time and connect it to successfully place the roof layer, so the operation efficiency is low and the labor cost is high.

发明内容Contents of the invention

针对上述技术中存在的不足之处,本发明提供一种利用变幅小车来安装和拆卸起重臂的装置和方法。Aiming at the deficiencies in the above technologies, the present invention provides a device and method for installing and dismounting a boom by using a luffing trolley.

为实现上述目的,本发明提供一种安装和拆卸起重臂的装置,包括主铉杆、横向钢梁、纵向钢梁、变幅小车、扒杆吊、动滑轮组、变幅钢丝绳和起升钢丝绳,所述纵向钢梁通过压轮和勾轮方式竖直方向固定在主铉杆上,所述横向钢梁水平放置,并与主铉杆下端平行,所述横向钢梁的一端与纵向钢梁螺丝固定连接,另一端设有扒杆吊底座,所述扒杆吊固定在扒杆吊底座上,所述扒杆吊底座后方焊接有防后倾装置,所述横向钢梁、纵向钢梁和主铉杆下端共同围合成一个半封闭矩形区域,所述变幅小车通过U型螺栓与横向钢梁固定连接,且容置在该半封闭矩形区域内,所述变幅钢丝绳与手拉葫芦连接,且一端固定在扒杆吊上,另一端固定在主铉杆上,所述起升钢丝绳一端固定在主铉杆上,另一端穿过动滑轮组后固定在扒杆吊上。In order to achieve the above object, the present invention provides a device for installing and dismounting the boom, including the main beam, the transverse steel beam, the longitudinal steel beam, the luffing trolley, the pole crane, the moving pulley block, the luffing wire rope and the hoisting wire rope , the longitudinal steel beam is vertically fixed on the main xuan bar by means of pressure rollers and hook wheels, the horizontal steel beam is placed horizontally, and is parallel to the lower end of the main xuan bar, and one end of the horizontal steel beam is connected to the longitudinal steel beam The screw is fixedly connected, and the other end is provided with a pole crane base, and the pole crane is fixed on the pole crane base, and an anti-reclining device is welded behind the pole crane base, and the horizontal steel beam, the longitudinal steel beam and the The lower ends of the main poles together form a semi-enclosed rectangular area, the luffing trolley is fixedly connected with the transverse steel beam through U-shaped bolts, and accommodated in the semi-enclosed rectangular area, and the luffing wire rope is connected with the chain block , and one end is fixed on the pole hanger, and the other end is fixed on the main pole, one end of the lifting wire rope is fixed on the main pole, and the other end passes through the pulley block and is fixed on the pole hanger.

其中,所述横向钢梁的长度为所使用的变幅小车的2.5倍长。Wherein, the length of the transverse steel beam is 2.5 times as long as the used luffing trolley.

其中,所述动滑轮组包括固定在主铉杆上端的第一滑轮,设置在“人”字型扒杆吊端部的第二滑轮,和与吊钩相连的第三滑轮,所述第一滑轮、第二滑轮为定滑轮,所述第三滑轮为动滑轮,所述起升钢丝绳一端固定在主铉杆,另一端依次穿过第一滑轮、第二滑轮和第三滑轮后固定在“人”字型扒杆吊端部。Wherein, the movable pulley block includes a first pulley fixed on the upper end of the main hook rod, a second pulley arranged at the end of the "herringbone" type pickling rod crane, and a third pulley connected with the hook, and the first pulley 1. The second pulley is a fixed pulley, and the third pulley is a movable pulley. One end of the lifting wire rope is fixed on the main rod, and the other end passes through the first pulley, the second pulley and the third pulley and is fixed on the "people" The end of the font grill rod.

其中,所述主铉杆上设有两个变幅小车,分别为第一变幅小车和第二变幅小车,所述第一变幅小车上固定有第一横向钢梁,所述第一横向钢梁与第一纵向钢梁固定连接,所述第二变幅小车上固定有第二横向钢梁,所述第二横向钢梁与第二纵向钢梁固定连接,所述第一变幅小车与第二变幅小车同步运动。Wherein, two luffing trolleys are arranged on the main pole, which are respectively the first luffing trolley and the second luffing trolley, the first luffing trolley is fixed with a first transverse steel beam, and the first luffing trolley The transverse steel beam is fixedly connected with the first longitudinal steel beam, the second transverse steel beam is fixed on the second luffing trolley, the second transverse steel beam is fixedly connected with the second longitudinal steel beam, and the first luffing trolley The trolley moves synchronously with the second luffing trolley.

其中,所述“人”字型扒杆吊的两端分别通过销轴固定在第一钢梁上的第一扒杆吊底座和第二钢梁上的第二扒杆吊底座上。Wherein, the two ends of the "herringbone" shaped pole crane are respectively fixed on the base of the first pole crane on the first steel beam and the base of the second pole crane on the second steel beam through pin shafts.

其中,所述半封闭矩形区域内还设有防后退装置,所述防后滑装置通过高强螺栓固定在主铉杆下端。Wherein, an anti-backward device is also provided in the semi-enclosed rectangular area, and the anti-backward device is fixed to the lower end of the main rod by high-strength bolts.

其中,所述横向钢梁和纵向钢梁通过方通或H型钢制作而成。Wherein, the transverse steel beam and the longitudinal steel beam are made of square or H-shaped steel.

本发明还提供一种安装和拆卸起重臂的方法,包括以下步骤:The present invention also provides a method for mounting and dismounting a boom, comprising the steps of:

S1、先根据塔机型号确定前端起重臂重量,塔机变幅小车两侧横梁的实际高度尺寸,经过计算相关参数,通过方通或H型钢制作横向钢梁和纵向钢梁;S1. First, determine the weight of the front-end boom according to the model of the tower crane, the actual height of the beams on both sides of the luffing trolley of the tower crane, and calculate the relevant parameters to make the horizontal steel beam and the longitudinal steel beam through square or H-shaped steel;

S2、在横向钢梁的一端设置扒杆吊底座,另一端用螺栓竖向连接纵向钢梁,采用压轮和勾轮方式将纵向钢梁固定在主铉杆下端,横向钢梁与主铉杆下端平行,所述第一橫梁、纵向钢梁和主铉杆下端共同围合成一个半封闭矩形区域,将变幅小车容置在所述半封闭矩形区域内,且变幅小车与第一横梁通过U型螺栓固定,变幅小车前后运动,从而带动第一横梁在压轮和勾轮的作用下前后运动;S2. Set up the pole crane base at one end of the horizontal steel beam, and connect the longitudinal steel beam vertically with bolts at the other end, and fix the longitudinal steel beam at the lower end of the main pole by means of pressure rollers and hook wheels, and the horizontal steel beam and the main pole The lower ends are parallel, and the first beam, the longitudinal steel beam and the lower end of the main beam jointly form a semi-closed rectangular area, and the luffing trolley is accommodated in the semi-closed rectangular area, and the luffing trolley passes through the first beam. The U-shaped bolt is fixed, and the luffing trolley moves back and forth, thereby driving the first crossbeam to move back and forth under the action of the pressure wheel and the hook wheel;

S3、安装扒杆吊,用一台5T手拉葫芦配合起升钢丝绳连接在扒杆吊端部和主铉杆上端,距离不小于5米,5T手拉葫芦来控制扒杆吊的变幅距离;在扒杆吊端部位置栓接两条变幅钢丝绳拴牢在纵向钢梁上端,后移时紧固该变幅钢丝绳将扒杆吊拉到最大限位固定,当变幅小车到达拆卸位置时,在变幅小车后方用高强螺栓对夹一个90度角的防后滑装置,固定变幅小车;S3. Install the pole crane. Use a 5T chain hoist to connect the end of the pole crane and the upper end of the main pole with a lifting wire rope. The distance is not less than 5 meters. The 5T chain hoist is used to control the luffing distance of the pole crane. ; Bolt two luffing steel wire ropes at the end of the pole crane and fasten them to the upper end of the longitudinal steel beam. When moving backward, tighten the luffing steel wire ropes to pull the pole crane to the maximum limit and fix it. When the luffing trolley reaches the dismantling position , at the rear of the luffing trolley, use high-strength bolts to clamp a 90-degree anti-slip device at the rear of the luffing trolley to fix the luffing trolley;

S4、在主铉杆上端固定第一滑轮,在“人”字型扒杆吊端部设置第二滑轮,将起升钢丝绳一端固定在横梁上,另一端分别穿过第一滑轮、第二滑轮和与吊钩连接的第三滑轮后,固定在扒杆吊的端部;将塔机自身的起升钢丝绳从第一滑轮下端穿过再通过第二滑轮向下环绕至第三滑轮,然后在扒杆吊端部固定,形成一个动滑轮组,将需拆卸起重臂用起升钢丝绳拴牢在第一滑轮上,拉紧主钢丝绳,5T手拉葫芦空中经第二滑轮前后位置,到达拆卸位置;S4. Fix the first pulley at the upper end of the main pole, set the second pulley at the end of the "herringbone"-shaped pick-up pole, fix one end of the lifting wire rope on the beam, and pass the other end through the first pulley and the second pulley respectively After being connected with the third pulley with the hook, it is fixed at the end of the crane; pass the hoisting wire rope of the tower crane itself through the lower end of the first pulley and then circle down to the third pulley through the second pulley, and then The end of the pole crane is fixed to form a movable pulley block, and the lifting arm to be dismantled is fastened to the first pulley with a lifting wire rope, and the main wire rope is tightened. The 5T hand chain hoist passes through the front and rear of the second pulley in the air and reaches the disassembly position. ;

S5、拆卸一节起重臂后,将吊钩与起重臂脱离,将扒杆吊拉到105度角,将两根变幅钢丝绳拉紧在纵向钢梁上,在变幅小车前端悬挂一个3T手拉葫芦,由3T手拉葫芦来控制空中变幅小车向后移动的速度,当3T手拉葫芦铁链长度不够时,在变幅小车后滚轮位置固定防后退装置,以此来变换3T手拉葫芦位置,确保变幅小车正常安全到达目的地。S5. After dismantling a section of the boom, separate the hook from the boom, pull the pole to an angle of 105 degrees, tighten two luffing steel wire ropes on the longitudinal steel beam, and hang a luffing trolley front end 3T chain hoist, the 3T chain hoist controls the speed of the luffing trolley moving backward in the air. When the chain length of the 3T chain hoist is not enough, fix the anti-backward device at the rear roller position of the luffing trolley to change the 3T The position of the chain hoist ensures that the luffing trolley reaches the destination normally and safely.

其中,所述横向钢梁的长度为所使用的变幅小车的2.5倍长。Wherein, the length of the transverse steel beam is 2.5 times as long as the used luffing trolley.

其中,所述扒杆吊底座后方焊接有防后倾装置。Wherein, an anti-dipping device is welded behind the base of the pole crane.

本发明的有益效果是:与现有技术相比,本发明利用变幅小车对起重臂进行安装和拆卸,充分利用了自身的空间和优势,能够一次性将起重臂吊离塔机连接,且成功放置屋面层,大大减轻了人力成本和工作效率。The beneficial effects of the present invention are: compared with the prior art, the present invention uses the luffing trolley to install and disassemble the boom, fully utilizes its own space and advantages, and can hoist the boom away from the tower crane at one time , and successfully placed the roof layer, greatly reducing labor costs and work efficiency.

附图说明Description of drawings

图1为本发明的安装和拆卸起重臂的装置工作状态下的示意图;Fig. 1 is the schematic diagram under the working state of the device for installing and dismounting the boom of the present invention;

图2为本发明安装和拆卸起重臂的装置后退状态下的结构示意图;Fig. 2 is a structural schematic diagram of the device for installing and dismounting the boom of the present invention in a backward state;

图3为本发明安装和拆卸起重臂的装置的扒杆吊安装结构示意图;Fig. 3 is a schematic diagram of the installation structure of the pole crane of the device for installing and dismounting the boom of the present invention;

图4为本发明安装和拆卸起重臂的装置中变幅小车工作状态示意图;Fig. 4 is a schematic diagram of the working state of the luffing trolley in the device for installing and dismounting the boom of the present invention;

图5为本发明安装和拆卸起重臂的装置中扒杆吊结构示意图。Fig. 5 is a schematic diagram of the structure of the pole crane in the device for installing and dismounting the boom according to the present invention.

主要元件符号说明如下:The main component symbols are explained as follows:

1、主铉杆2、横向钢梁1. Main pole 2. Transverse steel beam

3、纵向钢梁4、变幅小车3. Longitudinal steel beam 4. Luffing trolley

5、扒杆吊6、动滑轮组5. Rod crane 6. Moving pulley block

7、变幅钢丝绳8、起升钢丝绳7. Luffing wire rope 8. Hoisting wire rope

9、手拉葫芦11、防后退装置9. Chain block 11. Anti-backward device

21、扒杆吊底座22、防后倾装置21. Gripping pole crane base 22. Anti-tilt device

31、压轮32、勾轮31, pressure wheel 32, hook wheel

61、第一滑轮62、第二滑轮61, the first pulley 62, the second pulley

63、第三滑轮91、5T手拉葫芦63. The third pulley 91. 5T chain hoist

92、3T手拉葫芦631、吊钩。92. 3T chain block 631. Hook.

具体实施方式detailed description

为了更清楚地表述本发明,下面结合附图对本发明作进一步地描述。In order to express the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.

请参阅图1-图2,本发明提供一种安装和拆卸起重臂的装置,包括主铉杆1、横向钢梁2、纵向钢梁3、变幅小车4、扒杆吊5、动滑轮组6、变幅钢丝绳7和起升钢丝绳8,纵向钢梁3通过压轮31和勾轮32的方式竖直方向固定在主铉杆1上,横向钢梁2水平放置,并与主铉杆1下端平行,横向钢梁2的一端与纵向钢梁3通过螺丝固定连接,另一端焊接有扒杆吊底座21,用于固定扒杆吊5,扒杆吊整体呈倒"V"字型,其形状可一体成型,也可由两根扒杆吊5组合而成,扒杆吊底座21后方焊接有防后倾装置22,预防扒杆吊5变幅到最大角度时造成的后倾翻现象;横向钢梁2、纵向钢梁3和主铉杆1下端共同围合成一个半封闭矩形区域,变幅小车4夹持在该半封闭矩形区域内,且在半封闭矩形区域内还设有防后退装置11,防后滑装置11通过高强螺栓固定在主铉杆1下端;变幅钢丝绳7与手拉葫芦9连接,且一端固定在扒杆吊5上,另一端固定在主铉杆1上,起升钢丝绳8一端固定在主铉杆1上,另一端穿过动滑轮组6后固定在扒杆吊5上。Please refer to Fig. 1-Fig. 2, the present invention provides a device for installing and dismounting the boom, including the main pole 1, the transverse steel beam 2, the longitudinal steel beam 3, the luffing trolley 4, the pole crane 5, and the moving pulley block 6. The luffing wire rope 7 and the hoisting wire rope 8, the longitudinal steel beam 3 is vertically fixed on the main pole 1 by means of the pressing wheel 31 and the hook wheel 32, the horizontal steel beam 2 is placed horizontally, and is connected with the main pole 1 The lower ends are parallel, one end of the transverse steel beam 2 is fixedly connected with the longitudinal steel beam 3 by screws, and the other end is welded with a pole crane base 21 for fixing the pole crane 5, and the pole crane is in an inverted "V" shape as a whole. The shape can be integrally formed, or it can be combined by two pole cranes 5. An anti-tilt device 22 is welded behind the base 21 of the pole crane to prevent the phenomenon of backward tilting caused by the pole crane 5 luffing to the maximum angle; The steel girder 2, the longitudinal steel girder 3 and the lower end of the main beam 1 jointly form a semi-closed rectangular area, and the luffing trolley 4 is clamped in the semi-closed rectangular area, and an anti-backward device is also installed in the semi-closed rectangular area 11. The anti-sliding device 11 is fixed on the lower end of the main pole 1 by a high-strength bolt; One end of steel wire rope 8 is fixed on the main rod 1, and the other end passes through the moving pulley block 6 and is fixed on the pole hanger 5.

与现有技术相比,本发明利用变幅小车搭配扒杆吊以及动滑轮组,对起重臂进行安装和拆卸,充分利用了自身的空间和优势,能够一次性将起重臂吊离塔机连接,且成功放置屋面层,大大减低了周围高层建筑对起重臂拆卸带来的影响,安装和拆卸结构简单,易于操作,可行性强。Compared with the prior art, the present invention uses the luffing trolley to match the pole crane and the moving pulley block to install and disassemble the boom, making full use of its own space and advantages, and can lift the boom away from the tower crane at one time The connection and the successful placement of the roof layer greatly reduce the impact of the surrounding high-rise buildings on the disassembly of the boom. The installation and disassembly structure is simple, easy to operate, and highly feasible.

在本实施例中,横向钢梁2的长度为所使用的变幅小车4的2.5倍长,此长度不是个固定值,而是根据塔机的型号、变幅小车4两侧橫梁的实际高度尺寸,通过计算得出,不同的塔机型号以及橫梁高度,长度不同,且横向钢梁2和纵向钢梁3均通过方通或H型钢制作而成。In this embodiment, the length of the transverse steel beam 2 is 2.5 times longer than the luffing trolley 4 used, this length is not a fixed value, but according to the model of the tower crane and the actual height of the beams on both sides of the luffing trolley 4 The size is obtained through calculation, different tower crane models and beam heights and lengths are different, and the transverse steel beam 2 and the longitudinal steel beam 3 are all made of square or H-shaped steel.

在本实施例中,动滑轮组6包括固定在主铉杆1上端的第一滑轮61,设置在“人”字型扒杆吊5端部的第二滑轮62,和与吊钩631相连的第三滑轮63,第一滑轮61和第二滑轮62为定滑轮,第三滑轮63为动滑轮,三个滑轮相互配合,能够很省力地将机械臂通过吊钩631进行运送。In this embodiment, the movable pulley block 6 includes a first pulley 61 fixed on the upper end of the main pole 1, a second pulley 62 arranged at the end of the "herringbone"-shaped pick-up rod hanger 5, and a second pulley 62 connected to the hook 631. Three pulleys 63, the first pulley 61 and the second pulley 62 are fixed pulleys, the third pulley 63 is a movable pulley, and the three pulleys cooperate with each other to transport the mechanical arm through the hook 631 very labor-saving.

在本实施例中,手拉葫芦9设有两种,一种为5T手拉葫芦,另一种为3T手拉葫芦,安装扒杆吊5采用5T手拉葫芦,拆卸扒杆吊5采用3T手拉葫芦,当安装扒杆吊5时,用一台5T手拉葫芦配合起升钢丝绳8连接在扒杆吊5端部和起重臂主铉杆1上,通过5T手拉葫芦来控制扒杆吊5的变幅距离;当拆卸一节起重臂后,将吊钩631与起重臂脱离,将扒杆吊5拉到105度角,将两根限位用的起升钢丝绳7平行设置,并拉紧固定在纵向钢梁3上,在变幅小车前端悬挂一个3T手拉葫芦,由3T手拉葫芦来空中变幅小车向后移动的速度。In this embodiment, there are two types of chain hoists 9, one is a 5T chain hoist, and the other is a 3T chain hoist. The 5T chain hoist is used to install the pole crane 5, and the 3T chain hoist is used to disassemble the pole crane 5. Chain hoist, when installing the pole crane 5, a 5T chain hoist is used to connect the lifting wire rope 8 to the end of the pole crane 5 and the main pole 1 of the boom, and the pole 1 is controlled by the 5T chain hoist. The luffing distance of the pole crane 5; when a section of the boom is disassembled, the hook 631 is separated from the boom, the pole crane 5 is pulled to an angle of 105 degrees, and the two limit lifting wire ropes 7 are parallel Set, and tighten and fix on the longitudinal steel beam 3, hang a 3T chain hoist on the front end of the luffing trolley, and the speed of the air luffing trolley moving backward is controlled by the 3T chain hoist.

本发明还提供一种安装和拆卸起重臂的方法,包括以下步骤:The present invention also provides a method for mounting and dismounting a boom, comprising the steps of:

S1、先根据塔机型号确定前端起重臂重量,塔机变幅小车两侧横梁的实际高度尺寸,经过计算相关参数,通过方通或H型钢制作成横向钢梁2和纵向钢梁3;S1. First determine the weight of the front-end boom according to the model of the tower crane, the actual height of the beams on both sides of the luffing trolley of the tower crane, and calculate the relevant parameters, and make the horizontal steel beam 2 and the longitudinal steel beam 3 through the square or H-shaped steel ;

S2、在横向钢梁2的一端设置扒杆吊底座21,另一端用螺栓竖向连接纵向钢梁3,采用压轮31和勾轮32方式将纵向钢梁2固定在主铉杆1下端上,横向钢梁2与主铉杆1下端平行,第一橫梁2、纵向钢梁3和主铉杆1下端共同围合成一个半封闭矩形区域,将变幅小车4容置在半封闭矩形区域内;S2. Set up the pole crane base 21 at one end of the transverse steel beam 2, and vertically connect the longitudinal steel beam 3 with bolts at the other end, and fix the longitudinal steel beam 2 on the lower end of the main beam 1 by means of a pressing wheel 31 and a hook wheel 32 , the transverse steel beam 2 is parallel to the lower end of the main rod 1, the first cross beam 2, the longitudinal steel beam 3 and the lower end of the main rod 1 together form a semi-closed rectangular area, and the luffing trolley 4 is accommodated in the semi-closed rectangular area ;

S3、安装扒杆吊,用一台5T手拉葫芦91配合起升钢丝绳7连接在扒杆吊5端部和主铉杆1上端,距离不小于5米,5T手拉葫芦91来控制扒杆吊5的变幅距离;在扒杆吊5端部位置栓接两条直径为12mm的变幅钢丝绳7拴牢在纵向钢梁3上端,后移时紧固该变幅钢丝绳7将扒杆吊拉到最大限位固定,当变幅小车4到达拆卸位置时,在变幅小车4后方用高强螺栓对夹一个90度角的防后滑装置11,固定变幅小车4;S3. Install the pole crane, use a 5T chain hoist 91 to connect the lifting wire rope 7 to the end of the pole crane 5 and the upper end of the main pole 1, the distance is not less than 5 meters, and the 5T chain hoist 91 is used to control the pole The luffing distance of hanger 5; two luffing wire ropes 7 with a diameter of 12mm are bolted to the upper end of longitudinal steel beam 3 at the end position of picker hanger 5. Pull it to the maximum limit and fix it. When the luffing trolley 4 reaches the disassembly position, use high-strength bolts to clamp an anti-backward slipping device 11 at an angle of 90 degrees behind the luffing trolley 4 to fix the luffing trolley 4;

S4、在主铉杆1上端固定第一滑轮61,在“人”字型扒杆吊端部设置第二滑轮62,将起升钢丝绳8一端固定在横梁上,另一端分别穿过第一滑轮61、第二滑轮62和与吊钩631连接的第三滑轮63后,固定在扒杆吊5的端部;将塔机自身的起升钢丝绳8从第一滑轮61下端穿过再通过第二滑轮62向下环绕至第三滑轮63,然后在扒杆吊5端部固定,形成一个动滑轮组6,将需拆卸起重臂用起升钢丝绳8拴牢在第一滑轮61上,拉紧主钢丝绳8,5T手拉葫芦91空中经第二滑轮62前后位置,到达拆卸位置;S4. Fix the first pulley 61 at the upper end of the main pole 1, set the second pulley 62 at the end of the "herringbone"-shaped pole crane, fix one end of the lifting wire rope 8 on the beam, and pass the other end through the first pulley respectively 61. After the second pulley 62 and the third pulley 63 connected with the hook 631 are fixed on the end of the pole crane 5; the hoisting wire rope 8 of the tower crane itself passes through the lower end of the first pulley 61 and then passes through the second pulley 61. The pulley 62 circles downwards to the third pulley 63, and then fixes it at the end of the pole crane 5 to form a movable pulley block 6, fasten the hoisting wire rope 8 to the first pulley 61 with the lifting arm to be disassembled, and tighten the main pulley. Steel wire rope 8, 5T chain hoist 91 passes through the second pulley 62 in the air and reaches the dismantling position;

S5、拆卸一节起重臂后,将吊钩631与起重臂脱离,将扒杆吊5拉到105度角,将两根平行设置的变幅钢丝绳7拉紧在纵向钢梁3上,在变幅小车4前端悬挂一个3T手拉葫芦92,由3T手拉葫芦92来控制空中变幅小车4向后移动的速度,当3T手拉葫芦92铁链长度不够时,在变幅小车4后滚轮位置固定防后退装置11,以此来变3T换手拉葫芦92位置,确保变幅小车4正常安全到达目的地。S5. After disassembling a section of the boom, separate the hook 631 from the boom, pull the pole crane 5 to an angle of 105 degrees, and tighten two luffing wire ropes 7 arranged in parallel on the longitudinal steel beam 3, A 3T chain hoist 92 is hung on the front end of the luffing trolley 4, and the speed at which the air luffing trolley 4 moves backward is controlled by the 3T chain hoist 92. The rear roller position fixes the anti-backward device 11 to change the position of the 3T chain block 92 to ensure that the luffing trolley 4 arrives at the destination normally and safely.

在本实施例中,横向钢梁2的长度为所使用的变幅小车4的2.5倍长,此长度不是个固定值,而是根据塔机的型号、变幅小车4两侧橫梁的实际高度尺寸,通过计算得出,不同的塔机型号以及橫梁高度,长度不同。In this embodiment, the length of the transverse steel beam 2 is 2.5 times longer than the luffing trolley 4 used, this length is not a fixed value, but according to the model of the tower crane and the actual height of the beams on both sides of the luffing trolley 4 The size is obtained by calculation, different tower crane models and beam heights and lengths are different.

在本实施中扒杆吊底座31后方焊接有防后倾装置22,通过该装置,能够很好地预防扒杆吊5变幅到最大角度时造成的后倾翻现象。In this implementation, an anti-tilt device 22 is welded behind the base 31 of the pole crane, through which the backward tipping phenomenon caused when the pole crane 5 is luffed to the maximum angle can be well prevented.

结合一个具体操作进一步介绍,请参阅图3-图4,本实施例中,采用SCM-C7030塔机吊装12T屋面吊,在全面检查各机构及电气设备,使各系统正常,起扳吊臂,进行各部动作试验,合格后进行使用。Combined with a specific operation for further introduction, please refer to Figure 3-Figure 4. In this embodiment, the SCM-C7030 tower crane is used to hoist the 12T roof crane. After a comprehensive inspection of all mechanisms and electrical equipment, to make each system normal, pull the boom, Carry out the action test of each part, and use it after passing the test.

塔吊拆卸前先利用塔吊本身内爬系统将塔吊降至离屋面最低位置,在爬升框位置将塔吊固定牢靠,移动屋面吊回转,利用屋面吊起重臂吊离配重,留一块配重作平衡作用。在起重臂前段第二节主铉杆1安装两根“人”字型扒杆吊,用5T手拉葫芦控制扒杆吊的倾覆以此达到控制吊钩631中心点的效果。利用起升钢丝绳8作为牵引动力将最后一节起重臂吊起受力,然后打掉起重臂连接销轴,稍稍将5T手拉葫芦松开微距离,使最后一节起重臂与倒数第二节起重臂有距离,然后开动主起升机构,将起重臂吊至地面,利用此方法依次拆除倒数第三节起重臂后利用屋面吊将塔吊50米起重臂前端起吊15度角,使前拉杆弯曲,用6T小屋面吊拆除塔吊前拉杆后缓缓松开12T屋面吊主钩,在不改变原吊点的情况下解除40-50米之间起重臂,拆除下的起重臂直接吊至地面,再用12T屋面吊将40米大臂一次性吊至屋面,然后分解为5米、10米后吊至地面。Before the disassembly of the tower crane, use the internal climbing system of the tower crane to lower the tower crane to the lowest position away from the roof, fix the tower crane firmly at the position of the climbing frame, move the roof crane to rotate, use the roof crane boom to lift off the counterweight, and leave a counterweight for balance effect. Install two "herringbone"-shaped pole cranes on the main pole 1 of the second section of the front section of the boom, and use a 5T chain block to control the overturning of the pole cranes to achieve the effect of controlling the center point of the hook 631. Use the hoisting wire rope 8 as the traction power to hoist the last section of the boom to bear the force, then knock off the connecting pin of the boom, and loosen the 5T chain hoist slightly, so that the last section of the boom is in line with the countdown There is a distance between the second section of the boom, and then start the main hoisting mechanism to hoist the boom to the ground. Use this method to remove the penultimate section of the boom and use the roof crane to lift the front end of the 50-meter boom for 15 meters. degree angle, so that the front tie rod is bent, remove the front tie rod of the tower crane with a 6T small roof crane, and then slowly loosen the main hook of the 12T roof crane, lift the boom between 40-50 meters without changing the original lifting point, remove the The boom is directly hoisted to the ground, and then the 40-meter boom is hoisted to the roof at one time with a 12T roof crane, and then it is broken down into 5 meters and 10 meters and then hoisted to the ground.

在变幅小车4上端安装50*50*6mm*22000横向钢梁2,用Φ16*8.8级U型螺栓与变幅小车4刚性连接,在横向钢梁2前端焊接扒杆吊底座21,将Φ80*10*6000mm无缝钢管制作而成的扒杆吊采用销轴连接安装在扒杆吊底座21上,在第一橫梁2后部采用压轮31和勾轮32勾柱主弦杆1,在本实施例中,变幅小车4有两个,分别为第一变幅小车41和第二变幅小车42,第一变幅小车41和第二变幅小车42分别在主弦杆1左右两端,“人”字型扒杆吊5的两端分别采用销轴固定在第一扒杆吊底座211和第二扒杆吊底座212上,第一扒杆吊底座211和第二扒杆吊底座212之间用钢梁固定连接,以增大受力,防止变形,第一横向钢梁2A通过高强螺栓固定在第一变幅小车41上,且与第一纵向钢梁3A连接,第二横向钢梁2B通过高强螺栓固定在第二变幅小车42上,且与第二纵向钢梁3B连接,第一纵向钢梁3A下端与第二纵向钢梁3B的下端连接固定,以防止受力时变形。Install the 50*50*6mm*22000 transverse steel beam 2 on the upper end of the luffing trolley 4, rigidly connect it with the luffing trolley 4 with Φ16*8.8 grade U-bolts, weld the pole hanging base 21 on the front end of the transverse steel beam 2, and place the Φ80 The pole crane made of *10*6000mm seamless steel pipe is connected and installed on the base 21 of the pole crane with a pin shaft connection, and the pressure wheel 31 and the hook wheel 32 are used at the rear of the first beam 2 to hook the main chord 1. In this embodiment, there are two luffing trolleys 4, which are respectively the first luffing trolley 41 and the second luffing trolley 42. end, the two ends of the "herringbone" shaped pole hanger 5 are respectively fixed on the first pole hanger base 211 and the second pole hanger base 212 by pin shafts, the first pole lift base 211 and the second pole hanger base 211 The bases 212 are fixedly connected with steel beams to increase the force and prevent deformation. The first transverse steel beam 2A is fixed on the first luffing trolley 41 through high-strength bolts, and is connected with the first longitudinal steel beam 3A. The transverse steel beam 2B is fixed on the second luffing trolley 42 through high-strength bolts, and is connected with the second longitudinal steel beam 3B, and the lower end of the first longitudinal steel beam 3A is connected and fixed with the lower end of the second longitudinal steel beam 3B to prevent force time deformation.

在本实施例中,用Φ13mm起升主钢丝绳8连接扒杆吊5端部,将扒杆吊5牵引到75度角并将起升主钢丝绳8的另一端固定在橫梁上,确保扒杆吊5在向后滑动时稳固。在本实施例中,用变幅钢丝绳7的一端连接扒杆吊5端部,另一端分别固定在第一纵向钢梁3A和第二纵向钢梁3B上端,将变幅钢丝绳7前端用一临时3T手拉葫芦92固定,钢丝绳头拴固在变幅小车4上,慢慢先后滑动变幅小车4到下一节起重臂连接点后面1.5米处停止,用止定螺栓组合成防后退装置,将变幅小车4固定在起重臂上,变幅小车4和横向钢梁3固定完毕后,穿好起吊绳,确定好中心距离后缓缓松开变幅小车4后移时使用的钢丝绳,开始拆除起重臂,按照此方式以此拆除前端的几节起重臂,直到前拉杆位置。In this embodiment, use Φ13mm hoisting main steel wire rope 8 to connect the end of the pole crane 5, pull the pole crane 5 to an angle of 75 degrees and fix the other end of the main steel wire rope 8 on the beam to ensure that the pole crane 5 is firm when sliding backwards. In this embodiment, one end of the luffing wire rope 7 is used to connect the end of the pole crane 5, and the other end is respectively fixed on the upper ends of the first longitudinal steel beam 3A and the second longitudinal steel beam 3B, and the front end of the luffing wire rope 7 is connected with a temporary The 3T chain hoist 92 is fixed, the wire rope head is fastened on the luffing trolley 4, slowly slide the luffing trolley 4 one after another to stop at 1.5 meters behind the connection point of the next boom, and use the fixed bolts to form an anti-backward device , fix the luffing trolley 4 on the boom, after the luffing trolley 4 and the transverse steel beam 3 are fixed, put on the lifting rope, and slowly loosen the wire rope used when the luffing trolley 4 moves backward after the center distance is determined , start to dismantle the jib, follow this method to dismantle several sections of the jib at the front end until the position of the front tie rod.

在本实施例中,“人”字型扒杆吊5采用Φ为80x12的无缝钢管制作,材质为Q235,单根长度为8米,安装时左右跨度为1.3米,最大吊重为1.3T,变幅采用手拉葫芦变幅。In this embodiment, the "herringbone"-shaped pole crane 5 is made of seamless steel pipe with a diameter of 80x12, the material is Q235, the length of a single pole is 8 meters, the left and right span is 1.3 meters when installed, and the maximum lifting weight is 1.3T , Luffing chain hoist luffing.

根据实际情况倾覆幅度,计算扒杆单肢受力。因最大幅度时为最不利工况,所以按照最不利工况进行计算,扒杆自身重量很小而且为了方便计算故不考虑扒杆自身重量。选用两倍率起升钢丝绳,单根拉力为0.65T,单根扒杆受力为:According to the overturning range of the actual situation, calculate the force on the single limb of the pole. Because the maximum amplitude is the most unfavorable working condition, the calculation is carried out according to the most unfavorable working condition. The weight of the pole itself is very small and the weight of the pole itself is not considered for the convenience of calculation. Double-rate hoisting wire rope is selected, the single tension is 0.65T, and the force of a single pole is:

单肢=1.26T=12.6KNSingle limb=1.26T=12.6KN

杆强度验算rod strength check

钢管规格(mm)Steel pipe specification (mm) Φ80x12Φ80x12 截面面积A(mm2)Sectional area A(mm2) 2563.542563.54 截面回转半径i(mm)Section radius of gyration i(mm) 24.41324.413 强度设计值[f](N/mm2)Strength design value [f] (N/mm2) 215215

1、杆件轴心受拉强度验算1. Check calculation of axial tensile strength of rod

σ=N/A=12600/2563.54=4.9N/mm2≤[f]=215N/mm2σ=N/A=12600/2563.54=4.9N/mm2≤[f]=215N/mm2

2、杆件轴心受压强度验算2. Check calculation of the axial compressive strength of the member

杆长细比:Rod Slenderness Ratio:

λ1=L0/i=(a12+b12)0.5/i=(1200)/24.413=49.15≤[λ]=15,查规范表得:φ1=0.858λ1=L0/i=(a12+b12)0.5/i=(1200)/24.413=49.15≤[λ]=15, check the specification table: φ1=0.858

轴心受压稳定系数:Axial compression stability factor:

σ1=N1/(φ1A)=12600/(0.858×2563.45)=5.7N/mm2≤[f]=215N/mm2σ1=N1/(φ1A)=12600/(0.858×2563.45)=5.7N/mm2≤[f]=215N/mm2

以上相关参数均满足通用的建筑操作规程的要求!The above relevant parameters all meet the requirements of general building operation regulations!

在本实施例中,安装塔机最重件为塔机的40m起重臂,在起吊起重臂时(起重臂重8780kg),12T屋面吊在仰角75度时,工作半径9米时,额定负荷11400kg,起升高度为25m。故12T屋面吊来辅助本次的塔机安装任务。In this embodiment, the heaviest part of the tower crane installed is the 40m boom of the tower crane. When lifting the boom (the weight of the boom is 8780kg), when the 12T roof crane is at an elevation angle of 75 degrees, when the working radius is 9 meters, The rated load is 11400kg, and the lifting height is 25m. Therefore, the 12T roof crane is used to assist the tower crane installation task.

本发明的优势在于:The advantages of the present invention are:

1)本发明利用变幅小车搭配扒杆吊以及动滑轮组,对起重臂进行安装和拆卸,充分利用了自身的空间和优势,能够一次性将起重臂吊离塔机连接,且成功放置屋面层,大大减低了周围高层建筑对起重臂拆卸带来的影响;1) The present invention uses the luffing trolley to match the pole crane and the moving pulley block to install and disassemble the boom, making full use of its own space and advantages, and can lift the boom away from the tower crane at one time and connect it successfully. The roof layer greatly reduces the impact of the surrounding high-rise buildings on the disassembly of the boom;

2)安装和拆卸结构简单,易于操作,可行性强;2) The installation and disassembly structure is simple, easy to operate and highly feasible;

3)在本实施中扒杆吊底座后方焊接有防后倾装置,能够很好地预防扒杆吊变幅到最大角度时造成的后倾翻现象,结构设计巧妙,安全可靠。3) In this implementation, an anti-tilt device is welded behind the base of the pole crane, which can well prevent the backward tipping phenomenon caused by the pole crane luffing to the maximum angle. The structure design is ingenious, safe and reliable.

以上所揭露的仅为本发明实施的方式之一,不构成对本专利权利的限制。如果本领域内的技术人员受其启发,在不脱离本发明创造宗旨的情况下,不经创造性的设计出与本方案类似的实施案例,均属于本发明的保护范围。What is disclosed above is only one of the ways of implementing the present invention, and does not constitute a limitation on the rights of this patent. If those skilled in the art are inspired by it, without departing from the inventive concept of the present invention, they design implementation cases similar to this solution without creativity, which all belong to the protection scope of the present invention.

Claims (10)

1. one kind mounts and dismounts the device of lifting beam, it is characterized in that, comprise main device for carrying a tripot bar, horizontal girder steel, longitudinal girder steel, amplitude variation trolley, gin-pole truck, running block, luffing wireline and the wireline that hoists, described longitudinal girder steel is fixed on main device for carrying a tripot bar by pinch roller and hook wheel mode vertical direction, described horizontal girder steel horizontal positioned, and with main device for carrying a tripot bar under hold row level with both hands, one end of described horizontal girder steel is fixedly connected with longitudinal girder steel screw, the other end is provided with gin-pole truck base, described gin-pole truck is fixed on gin-pole truck base, described gin-pole truck base rear is welded with anti-tilting device, described horizontal girder steel, longitudinal girder steel and the main lower end of device for carrying a tripot bar enclose a semiclosed rectangular area jointly, described amplitude variation trolley is fixedly connected with horizontal girder steel by U-shaped bolt, and it is contained in this semiclosed rectangular area, described luffing wireline is connected with chain block, and one end is fixed on gin-pole truck, the other end is fixed on main device for carrying a tripot bar, the described wireline one end that hoists is fixed on main device for carrying a tripot bar, the other end is fixed on gin-pole truck after running block.
2. the device of installation and removal lifting beam according to claim 1, it is characterised in that, 2.5 times long that the length of described horizontal girder steel is the amplitude variation trolley used.
3. the device of installation and removal lifting beam according to claim 1, it is characterized in that, described running block comprises the first pulley being fixed on main device for carrying a tripot bar upper end, it is arranged on the 2nd pulley of " people " font gin-pole truck end, and the 3rd pulley being connected with suspension hook, described first pulley, the 2nd pulley are fixed pulley, described 3rd pulley is travelling block, the described wireline one end that hoists is fixed on main device for carrying a tripot bar, and the other end is fixed on " people " font gin-pole truck end successively after the first pulley, the 2nd pulley and the 3rd pulley.
4. the device of installation and removal lifting beam according to claim 1, it is characterized in that, described main device for carrying a tripot bar is provided with two amplitude variation trolleys, it is respectively the first amplitude variation trolley and the 2nd amplitude variation trolley, described first amplitude variation trolley is fixed with the first horizontal girder steel, described first horizontal girder steel girder steel longitudinal with first is fixedly connected with, described 2nd amplitude variation trolley is fixed with the 2nd horizontal girder steel, described 2nd horizontal girder steel girder steel longitudinal with the 2nd is fixedly connected with, and described first amplitude variation trolley and the 2nd amplitude variation trolley are synchronized with the movement.
5. the device of installation and removal lifting beam according to claim 4, it is characterised in that, on the 2nd gin-pole truck base on the first gin-pole truck base that the two ends of described " people " font gin-pole truck are fixed on the first girder steel by bearing pin respectively and the 2nd girder steel.
6. the device of installation and removal lifting beam according to claim 1, it is characterised in that, be also provided with anti-back device in described semiclosed rectangular area, described anti-after sliding device be fixed on the main lower end of device for carrying a tripot bar by high-strength bolt.
7. the device of installation and removal lifting beam according to claim 1, it is characterised in that, described horizontal girder steel and longitudinal girder steel are made by square tube or H profile steel.
8. one kind mounts and dismounts the method for lifting beam, it is characterised in that, comprise the following steps:
S1, first determine front end lifting beam weight according to tower type number, the actual height size of tower machine amplitude variation trolley both sides crossbeam, through calculating correlation parameter, it is made into horizontal girder steel and longitudinal girder steel by square tube or H profile steel;
S2, gin-pole truck base is set in one end of horizontal girder steel, the other end bolt erects to connecting longitudinal girder steel, adopt pinch roller and hook wheel mode and longitudinal direction girder steel is fixed on the main lower end of device for carrying a tripot bar, row is held level with both hands under horizontal girder steel and main device for carrying a tripot bar, described first beam, longitudinal girder steel and the main lower end of device for carrying a tripot bar enclose a semiclosed rectangular area jointly, amplitude variation trolley is contained in described semiclosed rectangular area, and amplitude variation trolley and first crossbeam fixed by U-shaped bolt, move before and after amplitude variation trolley, thus drive first crossbeam front and back motion under pinch roller with the effect hooking wheel;
S3, installation gin-pole truck, coordinate the wireline that hoists to be connected to gin-pole truck end and main device for carrying a tripot bar upper end with a 5T chain block, and distance is not less than 5 meters, and 5T chain block controls the luffing distance of gin-pole truck; Connect two luffing wireline at gin-pole truck end position bolt and fasten jail in longitudinal girder steel upper end; during rear shifting, gin-pole truck is moved to maximum spacing fixing by this luffing wireline fastening; when amplitude variation trolley arrives removed position; amplitude variation trolley rear high-strength bolt to folder 90 degree angles anti-after sliding device, fix amplitude variation trolley;
S4, fix the first pulley in main device for carrying a tripot bar upper end, in " people " font gin-pole truck end, the 2nd pulley is set, the wireline one end that will hoist is fixed on crossbeam, and the other end is fixed on the end of gin-pole truck after being each passed through the first pulley, the 2nd pulley and the 3rd pulley that is connected with suspension hook; By tower machine self hoist wireline from the first lower end of pulley through again by the 2nd pulley downwards around to the 3rd pulley; then at gin-pole truck end winding support; form a running block; the lifting beam wireline that hoists need to be dismantled and fasten jail on the first pulley; tension main rope; 5T chain block, in the air through the 2nd pulley front and back position, arrives removed position;
After S5, dismounting one joint lifting beam, suspension hook and lifting beam are departed from, gin-pole truck is moved to 105 degree of angles, by the tension of two luffing wireline on longitudinal girder steel, at amplitude variation trolley front suspension 3T chain block, control, by 3T chain block, the speed that aerial amplitude variation trolley moves backward, when 3T chain block iron chains length is inadequate, in amplitude variation trolley rear roller position, fixing anti-back device, converts 3T chain block position with this, it is ensured that amplitude variation trolley normal safe arrives point of destination.
9. the method for installation and removal lifting beam according to claim 8, it is characterised in that, 2.5 times long that the length of described horizontal girder steel is the amplitude variation trolley used.
10. the method for installation and removal lifting beam according to claim 8, it is characterised in that, described gin-pole truck base rear is welded with anti-tilting device.
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CN107697817A (en) * 2017-10-30 2018-02-16 北京紫竹慧建设服务股份有限公司 A kind of novel tower slings the method that weighing arm becomes length in the air
CN108238552A (en) * 2016-12-26 2018-07-03 广东庞源工程机械有限公司 A kind of multi-functional bar of lying prone of the assembled being connect with structure
CN109987532A (en) * 2017-12-31 2019-07-09 广东庞源工程机械租赁有限公司 A kind of assembling tower crane large arm merogenesis self-unloading is lain prone bar
CN111456471A (en) * 2020-05-06 2020-07-28 杭州夏克机械科技有限公司 Auxiliary balancing device for vertical splicing of steel beams
CN111807235A (en) * 2020-03-05 2020-10-23 中国华冶科工集团有限公司 Tower crane luffing trolley motor replacing device and replacing method
CN114084816A (en) * 2021-11-12 2022-02-25 北京紫竹慧建设服务股份有限公司 Counterweight arm cutting device and arm cutting process of tower crane
CN114852885A (en) * 2022-06-08 2022-08-05 中昇建机(南京)重工有限公司 A high-altitude self-demolition device and method for roof hoisting boom

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CN201645413U (en) * 2009-12-18 2010-11-24 四川华西集团有限公司 Simple gin-pole mechanism for demolishing internal climbing tower crane
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CN201347329Y (en) * 2008-12-25 2009-11-18 抚顺永茂建筑机械有限公司 Self-disassembling device of tower crane
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CN108238552A (en) * 2016-12-26 2018-07-03 广东庞源工程机械有限公司 A kind of multi-functional bar of lying prone of the assembled being connect with structure
CN108238552B (en) * 2016-12-26 2019-06-11 广东庞源工程机械有限公司 A kind of multi-functional bar of lying prone of the assembled being connect with structure
CN107697817A (en) * 2017-10-30 2018-02-16 北京紫竹慧建设服务股份有限公司 A kind of novel tower slings the method that weighing arm becomes length in the air
CN107697817B (en) * 2017-10-30 2019-01-18 北京紫竹慧建设服务股份有限公司 A kind of method of tower crane crane arm elongated degree in the air
CN109987532A (en) * 2017-12-31 2019-07-09 广东庞源工程机械租赁有限公司 A kind of assembling tower crane large arm merogenesis self-unloading is lain prone bar
CN111807235A (en) * 2020-03-05 2020-10-23 中国华冶科工集团有限公司 Tower crane luffing trolley motor replacing device and replacing method
CN111807235B (en) * 2020-03-05 2022-04-15 中国华冶科工集团有限公司 Tower crane luffing trolley motor replacing device and replacing method
CN111456471A (en) * 2020-05-06 2020-07-28 杭州夏克机械科技有限公司 Auxiliary balancing device for vertical splicing of steel beams
CN111456471B (en) * 2020-05-06 2020-10-30 杭州夏克机械科技有限公司 Auxiliary balancing device for vertical splicing of steel beams
CN114084816A (en) * 2021-11-12 2022-02-25 北京紫竹慧建设服务股份有限公司 Counterweight arm cutting device and arm cutting process of tower crane
CN114852885A (en) * 2022-06-08 2022-08-05 中昇建机(南京)重工有限公司 A high-altitude self-demolition device and method for roof hoisting boom

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